Is ATP naturally occurring in the human body?

ATP is the body’s natural energy currency. According to researchers from the University of Leeds, the human body has an ATP pool of just 250g, which is approximately the amount of energy equivalent to a single AA battery. ATP is being used constantly and regenerated in cells via a process known as respiration, which is driven by natural catalysts called enzymes. Each day the human body turns over as much ATP as its own body weight.